Granted Patent
Utility
US 6,201,857 · App. 08/406,668
Combination telephone and voice-mail transceiver
Inventor:
James P. Hamley
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: Mar 20, 1995
Inventor
James P. Hamley
Assignee (at issue)
Six Sigma, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.